Examples of org.apache.commons.lang3.StringUtils

org.apache.commons.lang3.builder.EqualsBuilder
Operations on {@link java.lang.String} that are{@code null} safe.
- IsEmpty/IsBlank - checks if a String contains text
- Trim/Strip - removes leading and trailing whitespace
- Equals - compares two strings null-safe
- startsWith - check if a String starts with a prefix null-safe
- endsWith - check if a String ends with a suffix null-safe
- IndexOf/LastIndexOf/Contains - null-safe index-of checks
- IndexOfAny/LastIndexOfAny/IndexOfAnyBut/LastIndexOfAnyBut - index-of any of a set of Strings
- ContainsOnly/ContainsNone/ContainsAny - does String contains only/none/any of these characters
- Substring/Left/Right/Mid - null-safe substring extractions
- SubstringBefore/SubstringAfter/SubstringBetween - substring extraction relative to other strings
- Split/Join - splits a String into an array of substrings and vice versa
- Remove/Delete - removes part of a String
- Replace/Overlay - Searches a String and replaces one String with another
- Chomp/Chop - removes the last part of a String
- LeftPad/RightPad/Center/Repeat - pads a String
- UpperCase/LowerCase/SwapCase/Capitalize/Uncapitalize - changes the case of a String
- CountMatches - counts the number of occurrences of one String in another
- IsAlpha/IsNumeric/IsWhitespace/IsAsciiPrintable - checks the characters in a String
- DefaultString - protects against a null input String
- Reverse/ReverseDelimited - reverses a String
- Abbreviate - abbreviates a string using ellipsis
- Difference - compares Strings and reports on their differences
- LevenshteinDistance - the number of changes needed to change one String into another
The {@code StringUtils} class defines certain words related toString handling.
- null - {@code null}
- empty - a zero-length string ( {@code ""})
- space - the space character ( {@code ' '}, char 32)
- whitespace - the characters defined by {@link Character#isWhitespace(char)}
- trim - the characters <= 32 as in {@link String#trim()}
{@code StringUtils} handles {@code null} input Strings quietly.That is to say that a {@code null} input will return {@code null}. Where a {@code boolean} or {@code int} is being returneddetails vary by method.

A side effect of the {@code null} handling is that a{@code NullPointerException} should be considered a bug in{@code StringUtils}.

Methods in this class give sample code to explain their operation. The symbol {@code *} is used to indicate any input including {@code null}.

#ThreadSafe#
@see java.lang.String @since 1.0 @version $Id: StringUtils.java 1153241 2011-08-02 18:49:52Z ggregory $


    @Override
    public int compareTo(
        @NotNull(message = "other can't be NULL") final RepoCommit other
    ) {
        return new CompareToBuilder().append(
            this.repo().coordinates(),
            other.repo().coordinates()
        ).append(this.sha(), other.sha()).build();
    }

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    @Override
    public int compareTo(
        @NotNull(message = "cont should not be NULL") final Content cont
    ) {
        return new CompareToBuilder()
            .append(this.path(), cont.path())
                .append(this.repo().coordinates(), cont.repo().coordinates())
            .build();
    }

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        @Override
        public int compareTo(
            @NotNull(message = "label can't be NULL") final Label label
        ) {
            return new CompareToBuilder()
                .append(this.repo().coordinates(), label.repo().coordinates())
                .append(this.obj, label.name())
                .build();
        }

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        }
        @Override
        public int compareTo(
            @NotNull(message = "other can't be NULL") final Coordinates other
        ) {
            return new CompareToBuilder()
                .append(this.usr, other.user())
                .append(this.rpo, other.repo())
                .build();
        }

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     */
    @Override
    public int compareTo(Object object)
    {
        ReportableListObject myClass = (ReportableListObject) object;
        return new CompareToBuilder()
            .append(this.project, myClass.project)
            .append(this.amount, myClass.amount)
            .append(this.city, myClass.city)
            .append(this.task, myClass.task)
            .toComparison();

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    @Override
    public boolean equals(final Object other) {
      if (!(other instanceof RowColIndex))
        return false;
      RowColIndex castOther = (RowColIndex) other;
      return new EqualsBuilder().append(rowKey, castOther.rowKey).append(colIndex, castOther.colIndex)
          .isEquals();
    }

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  public boolean equals(Object obj) {
    if (obj == null) return false;
    if (obj == this) return true;
    if (Purchaser.class.isAssignableFrom(obj.getClass())) {
      final Purchaser other = Purchaser.class.cast(obj);
      return new EqualsBuilder().append(this.id, other.id)
          .append(this.name, other.name)
          .append(this.address, other.address)
          .append(this.nip, other.nip).isEquals();
      }
      return false;

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        {
            return false;
        }


        QueryResult<?> c = (QueryResult<?>) obj;
        return new EqualsBuilder().append(getNode(), c.getNode())
                .append(getAttributeName(), c.getAttributeName()).isEquals();
    }

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        {
            return false;
        }


        DefaultExpressionEngineSymbols c = (DefaultExpressionEngineSymbols) obj;
        return new EqualsBuilder()
                .append(getPropertyDelimiter(), c.getPropertyDelimiter())
                .append(getEscapedDelimiter(), c.getEscapedDelimiter())
                .append(getIndexStart(), c.getIndexStart())
                .append(getIndexEnd(), c.getIndexEnd())
                .append(getAttributeStart(), c.getAttributeStart())

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        {
            return false;
        }


        FileLocator c = (FileLocator) obj;
        return new EqualsBuilder().append(getFileName(), c.getFileName())
                .append(getBasePath(), c.getBasePath())
                .append(sourceURLAsString(), c.sourceURLAsString())
                .append(getEncoding(), c.getEncoding())
                .append(getFileSystem(), c.getFileSystem())
                .append(getLocationStrategy(), c.getLocationStrategy())

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